%%%-------------------------------------------------------------------
%%% File    : gen_server_template.full
%%% Author  : my name <yourname@localhost.localdomain>
%%% Description : 
%%%
%%% Created :  2 Mar 2007 by my name <yourname@localhost.localdomain>
%%%-------------------------------------------------------------------
-module(judgment_mapserver).

-behaviour(gen_server).

-define(MAP, {
-1, -2, -4, -5, -6, -5, -4, -2, -1, 
 0,  0,  0,  0,  0,  0,  0,  0,  0, 
 0, -3,  0,  0,  0,  0,  0, -3,  0, 
-7,  0, -7,  0, -7,  0, -7,  0, -7, 
 0,  0,  0,  0,  0,  0,  0,  0,  0,
 0,  0,  0,  0,  0,  0,  0,  0,  0,
 7,  0,  7,  0,  7,  0,  7,  0,  7, 
 0,  3,  0,  0,  0,  0,  0,  3,  0,
 0,  0,  0,  0,  0,  0,  0,  0,  0,
 1,  2,  4,  5,  6,  5,  4,  2,  1
}).

%% API
-export([start_link/1]).

%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2,
	 terminate/2, code_change/3]).

%%====================================================================
%% API
%%====================================================================
%%--------------------------------------------------------------------
%% Function: start_link() -> {ok,Pid} | ignore | {error,Error}
%% Description: Starts the server
%%--------------------------------------------------------------------
start_link(Name) ->
    gen_server:start_link({local, Name}, ?MODULE, [?MAP], []).

%%====================================================================
%% gen_server callbacks
%%====================================================================

%%--------------------------------------------------------------------
%% Function: init(Args) -> {ok, State} |
%%                         {ok, State, Timeout} |
%%                         ignore               |
%%                         {stop, Reason}
%% Description: Initiates the server
%%--------------------------------------------------------------------
init([Map]) ->
    {ok, Map}.

%%--------------------------------------------------------------------
%% Function: %% handle_call(Request, From, State) -> {reply, Reply, State} |
%%                                      {reply, Reply, State, Timeout} |
%%                                      {noreply, State} |
%%                                      {noreply, State, Timeout} |
%%                                      {stop, Reason, Reply, State} |
%%                                      {stop, Reason, State}
%% Description: Handling call messages
%%--------------------------------------------------------------------
handle_call({get_map}, _From, Map) ->
    {reply, Map, Map};

handle_call({try_move, {{XFrom, YFrom}, {XTo, YTo}}}, _From, Map) ->
    L = rules:get_list(Map, {XFrom, YFrom}),
    case [P || P <- L, P =:= {{XFrom, YFrom}, {XTo, YTo}}] of 
        [] -> {reply, false, Map};
        [_] -> {reply, true, chessmap:apply(Map, {{XFrom, YFrom}, {XTo, YTo}})}
    end;    

handle_call(stop, _From, Map) ->
    {stop, normal, stopped, Map};

handle_call(Request, _From, State) ->
    io:format("~nbad args : ~p~n", [Request]),
    Reply = ok,
    {reply, Reply, State}.

%%--------------------------------------------------------------------
%% Function: handle_cast(Msg, State) -> {noreply, State} |
%%                                      {noreply, State, Timeout} |
%%                                      {stop, Reason, State}
%% Description: Handling cast messages
%%--------------------------------------------------------------------
handle_cast(_Msg, State) ->
    {noreply, State}.

%%--------------------------------------------------------------------
%% Function: handle_info(Info, State) -> {noreply, State} |
%%                                       {noreply, State, Timeout} |
%%                                       {stop, Reason, State}
%% Description: Handling all non call/cast messages
%%--------------------------------------------------------------------
handle_info(_Info, State) ->
    {noreply, State}.

%%--------------------------------------------------------------------
%% Function: terminate(Reason, State) -> void()
%% Description: This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any necessary
%% cleaning up. When it returns, the gen_server terminates with Reason.
%% The return value is ignored.
%%--------------------------------------------------------------------
terminate(_Reason, _State) ->
    ok.

%%--------------------------------------------------------------------
%% Func: code_change(OldVsn, State, Extra) -> {ok, NewState}
%% Description: Convert process state when code is changed
%%--------------------------------------------------------------------
code_change(_OldVsn, State, _Extra) ->
    {ok, State}.

%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------

